Viscoelastic Fluid Flow Pass a Porous Circular Cylinder When the Magnetic Field Included

Widodo, Basuki; Imron, Chairul; Asiyah, Nur; Siswono, Galuh Oktavia; Rahayuningsih, Tri; Purbandini,

doi:10.17654/ms099020173

Cited by 7 publications

(7 citation statements)

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“…Hasil simulasi numerik aliran magnetohidrodinamik tak tunak pada konveksi paksa menggunakan metode Keller-Box menunjukkan bahwa ketika parameter magnetik bertambah maka distribusi temperatur fluida berkurang dan ketika parameter magnetik berkurang maka distribusi kecepatan fluida juga berkurang [7]. Selain itu, kecepatan akan semakin bertambah seiring bertambahnya medan magnet [8]. Dan juga bertambahnya parameter magnetik maka profil kecepatan semakin bertambah pada fluida micropolar [9].…”

Section: Liranunclassified

Magnetohidrodinamik Tak Tunak pada Konveksi Campuran yang Mengalir Melalui Bola Teriris Dalam Fluida Kental Di Bawah Pengaruh Medan Magnet

Utama¹,

Widodo²,

Adzkiya³

2018

JSSITS

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Abstrak-Magnetohidrodinamik (MHD) adalah studi mengenai dinamika fluida konduksi listrik akibat medan magnet. Pada penelitian ini di amati permasalahan tentang aliran fluida kental yang mengaliri bola teriris bermagnet dengan alirannya dipengaruhi konveksi campuran dengan berfokus pada kondisi tak tunak. Aliran fluida kental yang melewati bola teriris akan membentuk lapisan batas. Berdasarkan fenomena pada lapisan batas tersebut dibentuk Persamaan Pembangun dari model matematika, Persamaan Pembangun berdimensi ditransformasikan ke dalam bentuk non-dimensional selanjutnya ditransformasikan ke dalam bentuk Persamaan S imilaritas. Kemudian, Persamaan S imiliritas tersebut diselesaikan secara numerik dengan metode Keller-Box. S etelah itu, dikaji tentang perbandingan parameter yang digunakan yaitu parameter magnetik, parameter konveksi, dan besar sudut irisan bola terhadap kurva kecepatan dan temperatur dengan cara mengembangkan model matematika dari permasalahan di atas dan menyelesaikan secara numerik menggunakan metode Keller-Box. Hasil dari penelitian ini, model matematika yang didapatkan melalui persamaan-persamaan sebelumnya, jika semakin besar parameter magnetik, parameter konveksi dan sudut irisan, maka semakin meningkat pula kecepatan aliran fluida. S ehingga variasi parameter tersebut berbanding lurus dengan kecepatan fluida. S elain itu, jika semakin besar parameter magnetik, parameter konveksi dan sudut irisan, maka semakin berkurang pula temperatur fluida. S ehingga parameter tersebut berbanding terbalik dengan temperatur fluida. Namun pada simulasi temperatur Bilangan Prandtl berlaku sebaliknya. Bilangan Prandtl berbanding lurus dengan temperatur fluida dan berbanding terbalik terhadap kecepatan fluida. Hasil dari setiap simulasi menunjukkan bahwa setiap kurva dari setiap simulasi parameter akan berubah secara signifikan pada setiap perubahan jarak titik penelitan atau jarak lapisan batas.

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Section: Liranunclassified

Magnetohidrodinamik Tak Tunak pada Konveksi Campuran yang Mengalir Melalui Bola Teriris Dalam Fluida Kental Di Bawah Pengaruh Medan Magnet

Utama¹,

Widodo²,

Adzkiya³

2018

JSSITS

Self Cite

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“…Numerous investigations have been done by researchers to examine the movement of fluids within a circular cylinder, Tham et al, [8] and Mohamed et al, [9] who have investigated mixed convection over a horizontal circular cylinder have seen an increase in the skin friction coefficient at the middle of the cylinder (1.1-1.5 radians) before falling towards the cylinder's end surface. Based on a review of the literatures and the opinions of certain researchers, focus on Newtonian heating by Salleh et al, [10], the flow of Jeffrey fluid by Zokri et al, [11], flow past a symmetric cylinder by Mahat et al, [12], nanofluid by Tham et al, [13], flow of viscoelastic fluid by Widodo et al, [14]. Following that, the flow and heat transfer are immersed in a viscoelastic nanofluid by Mahat et al, [15].…”

Section: Introductionmentioning

confidence: 99%

Mixed Convection Boundary Layer Flow over a Horizontal Circular Cylinder in AL2O3-Ag/Water Hybrid Nanofluid with Viscous Dissipation

Eddy Elfiano,

Nik Mohd Izual Nik Ibrahim,

Muhammad Khairul Anuar Mohamed

2024

CFDL

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This paper investigated the mathematical modelling for mixed convection boundary layer flow over a horizontal circular cylinder in hybrid nanofluid with viscous dissipation. The transformed partial differential equations (PDEs) are numerically solved using an implicit finite-difference approach known as the Keller-box method. The numerical solutions for the reduced Nusselt number, , local skin friction coefficient, , temperature profile, and velocity profiles are found and graphically presented in detail. Effects of the Eckert number, Richardson number and nanoparticle volume fraction are all examined and explained. It is found that the increase of volume fraction of nano material in nanofluid has increased the value of skin friction coefficient. The low density of nano oxides such as alumina in hybrid nanofluids also contribute to reduce friction between fluid and body surface. Based on numerical analysis, the combination of nanoparticles in the form of hybrid nanofluid may reduce skin friction phenomena while sustaining heat transfer characteristics comparable to nanofluid. The results in this paper are original and will assist researchers working in the field of boundary layer flow. It can also be utilised as a reference in experimental studies to reduce operating costs.

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“…Magnetohydrodynamic (MHD) is studied about the relation of fluid flow and magnetic fields [2]. Magnetohydrodynamics is a magnetic field can induce an electric in a moving conductive liquid, which in turn polarizes the liquid and reciprocally changes the magnetic field itself [3][4][5][6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Magnetohydrodynamic Nanofluid Flows Passing through a Smart Fabric under the Influence of Magnetic Field and Radiative Flux

Zaitun,

Basuki Widodo,

Chairul Imron

2024

ARFMTS

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The study of MHD have been widely on topics with complex problems. Just as this topic involves inductive polymers or smart fabrics for engineering in machinery or protective equipment. The smart fabrics can be involved in MHD studies become a useful material. The smart fabric is a sheet of inductive polymer that can be an influence in the MHD analysis as well as a parameter that can be considered. In this study, the MHD of nanofluid namely Iron-(III)-oxide flows past in smart fabrics under influence of magnetic field and radiative flux is studied by constructing a mathematical model and then the model solved numerically using the Keller-Box scheme. The effect of Mixed Convection and stretching parameter is considered on the model. Numerical simulations were carried out to examine the effect of the parameters, are obtained the profile of velocity and temperature increase when the magnetic and stretching parameters increases, the velocity profile and temperature decreases when the Prandtl number are increases, the profiles of velocity are decreases and temperature increases when porosity variable and volume fraction parameter’s value increases, and the profile of temperature increase when the mixed convection’s value and the radiation parameter increases.

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Viscoelastic Fluid Flow Pass a Porous Circular Cylinder When the Magnetic Field Included

Cited by 7 publications

References 0 publications

Magnetohidrodinamik Tak Tunak pada Konveksi Campuran yang Mengalir Melalui Bola Teriris Dalam Fluida Kental Di Bawah Pengaruh Medan Magnet

Magnetohidrodinamik Tak Tunak pada Konveksi Campuran yang Mengalir Melalui Bola Teriris Dalam Fluida Kental Di Bawah Pengaruh Medan Magnet

Mixed Convection Boundary Layer Flow over a Horizontal Circular Cylinder in AL2O3-Ag/Water Hybrid Nanofluid with Viscous Dissipation

Magnetohydrodynamic Nanofluid Flows Passing through a Smart Fabric under the Influence of Magnetic Field and Radiative Flux

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